Ana Ivanovic defeated Rebecca Marino 6-3 6-2 in the Birmingham round of 16 on grass.
Ivanovic A. took it in straight sets.
Ivanovic A. and Marino R. faced 4 of the same opponents in the last 12 months. Ivanovic A. went 3–5 (38%) against them, Marino R. 1–3 (25%). Only 2 of the comparisons are context-comparable — too few for a conclusion.
Only 4 common opponents — small sample, treat as indicative.